Question

The elements in a group have similar electron configurations. An element's electron configuration determines its chemical properties. Therefore, members of a group in the periodic table have similar chemical properties. This pattern of repeating properties is the ___________.

a) elemental order
b) group behavior
c) atomic configuration
d) periodic trend

Answer 1

The repeating pattern of properties in elements, caused by similar valence electron configurations within a group, defines what is known as the 'periodic trend' in chemistr

Step-by-step explanation:

The pattern of repeating properties observed in elements of the periodic table, due to similar electron configurations and hence similar chemical properties of elements in the same group, is known as the periodic trend. Elements are arranged in groups (vertical columns) on the periodic table, and those in the same group have the same number and distribution of electrons in their valence shells. This results in each group displaying distinct and typically similar chemical behaviors. For example, the alkali metals of Group 1 all have a single s electron in their valence shell, contributing to their similar reactivity. Similarly, as you move down a group, the metallic character generally increases, affecting the physical state and conductivity of the elements.